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(No Model.)

3 Sheets-Sheet 1. A. L. BIKER.

SEUTIONAL STEAM BOILER.

Patented Mar. 20, 1888.

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(No Model.)

' 3 Sheets-Sheet 2. A. L. BIKER.

SEGTIONAL STEAM BOILER.

Patented Mar. 20, 1888.

FIGJV- (No Model.) 3 Sheets-+Sheet 3.

. A. L. BIKER.

SEGTIONAL STEAM BOILER.

No. 379,725. Patented Mar. 20, 1888.

FIG -V.

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ANDREW L. BIKER, OF NEIV YORK, N. Y.

SECTIONAL STEAM-BOILER.

B'PECIFICATIOZJ forming part of Letters Patent No. 379,725, dated March 20, 1888.

Application filed November 29, 1887. Serial 253,454. (No model.)

In the accompanying drawings, which form To all whom, it may concern:

Be it known that 1, ANDREW L. BIKER, of a part of this specification, I have illustrated New York city, in the county and State of New a steam-boiler constructed in accordance with York, haveinvented anew and useful Improvethe invention, Figure I being a side elevation ment in Sectional Stearu-Boilers, which imwith the outer casing removed; Fig. II, a simiprovement is fully set forth in the following lar front elevation; Fig. III, a section on line specification. III, Fig. II; Fig. IV, a plan showing the steam- This invention has reference to the construc cross and discharge pipes; and Fig. V, a cention of sectional boilers or steamgenerators, tral vertical section on line V, Figs. I and III,

IO and its object is to realize high eliiciency in looking in the direction of the arrows. 6o proportion to the size of boiler, to secure great The entire boiler is inclosed in a casing, A, strength and consequently diminish the liabilwhich may be of sheet metal, provided at the ity of explosion, and to produce a boiler which top with a fine or chimney, B. can be easily constructed and put together and The boiler comprises a number of sections,

1 5 at comparatively small cost. 0, d, c, f, g, h, and h, arranged horizontally one According to this invention each section of above the other. The construction of the secthe boiler is built up of a number of short tions is best shown in Fig. III. Each section lengths of straight pipe and elbows forming a is a rectangular coil composed of shortlengths square or rectangular coil, the convolutious of of straight pipe 2, connected at the corners by 20 which lie all in the same plane. Each section elbows 3, forming a continuous passage for the communicates with the one next above and water from the inner to the outer end, or vice below at its center and outer end, respectively. versa, as the case may be. The inner end, 4, This construction gives great compactness and of the section h communicates with the inner strength. It is cheap, because only short end of the section, h, next above it by a verti- 25 straight lengths of pipe are used, and for the cal pipe, 25. Section 9 is identical in consame reason the boiler can be easily built up struction with section h. Its outer end is conin any place or removed when necessary. nected with the outer end of section 9 by elbow I am aware that boilers have heretofore been 30, and so on through the series. To the incommonly constructed of straight lengths as ner end of the top section, 0, is attached the 30 well as of coils of pipe, and that these have feed-pipe 8, by which water is supplied to the been carried back and forth through and boiler. After passing through the bottom seearound the fire'space in various ways. The tion, h, the water goes through the rectanguparticular construction described, however, is lar coil 1', being connected therewith by the believed to be new, and it possesses the advanpipe 9, Fig. III. The coil '5 incloses the fire- 35 tages pointed out. pot, as clearly shown in the drawings. It runs The bottom section of the boiler communipartly across the front thereof, Fig. II, then cates with a rectangular coil, which surrounds back by return-bend to and entirely around the the four sides of the fire-pot, leaving only a furnace to the front side again, and back by suitable opening in front for admitting fuel. return-bend 11. Sufficient distance is left be- 0 This coil is likewise made up ofstraight lengths tween the ends 10 and 11 to permit access to 0 with elbows and returnbends. Four separathe fire. The last end of coil is connected by tors are employed, and these are in the form of the vertical pipe 12 and horizontal pipe 13 upright tubes or columns, and are placed at with the cross k. The latter consists of four the four corners of the structure. Much greater branch pipes radiating from a common con 5 strength results from the employment of four tral joint, 15, to which the inlet-pipe 18 is con- 5 separators instead of a single separator of four nected. The shape of the cross is exactly the times the capacity. The separators are crosssame as that of the cross Z, Fig. IV, which connected at the top by a steam-cross, and the overlies it. The ends of the pipes 70 are conlatter communicates with the superheater, nccted by elbows with vertical pipes 16, which pass down into the upright tubular separators I00 50 from which the steam is drawn as required.

' the floor or bed-plate.

D. The latter (four in number) are placed at the four corners of the structure, and are screwed onto pedestals 17, securely bolted to To the top of the separators are connected the ends of the cross Z, which, to distinguish it from the water-cross k, may be termed the steam-cross. The centraljoint or union-coupling, 19, of the latter is Connected with the superheater m, from which steam is drawn as required through steam-pipe 20. The superheater is constructed in the same manner as the boiler-sections.

The water and wet steam from'the boiler pass to the separators D by pipes 7t and 16 and the liquid falls to the bottom thereof, the steam passing off by pipes Z. The four separators D are also connected at the bottom by pipes 22, to which is connected a dischargepipe, 23. One of the separatorsD has agage, 25, to show the level of the water therein, which of course is the same in all, and when this level rises higher than desirable the water can be drawn off through pipes 22 23.

At the top of the firechamber is suspended a conical deflector, 26, in order to spread the heat through the various pipes.

It will be noted that while the structure is one of great stability there is perfect freedom fOl'GXPEtllSlOl] and contraction of the pipes constituting the boiler, the latter being in effect a single continuous pipe free throughout its entire length, and unattached to any fixed point.

It is obvious that modifications can be made in details of construction without departing from the spirit of the invention.

Having now fully described my said invention and the manner of carrying the same into effect, what I claim is g 1. A steam boiler or generator comprising a series of sections, each section composed of straight lengths of pipe and elbows assembled to form an angular coil, the convolutious of which all liein the same horizontal plane, substantially as described.

2. A steam boiler or generator comprising a series of horizontal sections, one above the other, each section composed of straight lengths of pipe and elbows assembled to form a rectangular coil, the successive sections being connected together alternately at their centers and outer ends, substantially as described.

'3. In a steam boiler or generator, the combination, with the series of horizontal sections placed above the fire-pot, and consisting each of a rectangular coil, of the coil surrounding said fire-pot and consisting of straight lengths of pipe connected by elbows at the corners,sub-

stantiall y as described.

4. The combinatiomwith the boiler'sections, of two or more separators, a pipe leading from the boiler and branching to the several separators, and a steam-pipe also branching to the several separators, substantially as described.

5. The combinatiomwith the boiler-sections, of the four separators, one at each corner of the boiler, the water-cross,and the steam-cross connected with said separators, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribi ng witnesses.

ANDREW L. BIKER. P

Witnesses:

PHILIP MAURO, G. J. HEDRIOK. 

